.TH PBINOM 3M
.SH NAME
pbinom
.SH DESCRIPTION
function pbinom.f

source
  Bevington, page 31.

purpose
  evaluate binomial probability coefficient

usage
  result = pbinom (nobs, ntotal, prob)

description of parameters
  nobs   - number of items observed
  ntotal - total number of items
  prob   - probability of observing each item

subroutines and function subprograms required
  factor (n)
    calculates n factorial for integers
